References
- Andersson , A. 1976a . On the determination of some heavy metals in organic material . Swedish J. agric. Res. , 6 : 145 – 150 .
- Andersson , A. 1976b . On the determination of ecologically significant fractions of some heavy metals in soils . Swedish J. agric. Res. , 6 : 19 – 25 .
- Andersson , A. 1977 . Tungmetaller i handelsgödsel, stallgödsel och kalk. Kadmiumbudget för åkermarken . Lantbrukshögskolans meddelanden A , 283 Uppsala
- Egnér , H. , Riehm , H. and Domingo , W. R. 1960 . Untersuchungen über die chemische Bodenanalyse als Grundlage für die Beurteilung des Nährstoffzustandes des Böden. II. Chemische Extraktionsmethoden zur Phosphor- und Kaliumbestimmung . Lantbr. högsk. Annlr. , 26 : 199 – 215 .
- Eriksson , J. E. 1990 . Factors influencing adsorption and plant uptake of cadmium from agricultural soils , Uppsala : Swedish University of Agricultural Sciences, Dept. of Soil Sciences . Reports and Dissertations 4
- Gunnarsson , O. 1980 . “ Cadmium in the soil-plant environment ” . In Royal Swedish Academy of Agriculture and Forestry 4 – 47 . Report No. 4
- Isermann , K. 1982 . Influence of phosphate fertilization on the cadmium content of the soil determined on the basis of numerous long-term trials in Western Europe . Lantwirtsch. Forsch. Sonderheft , 39 : 283 – 301 .
- Jung , J. , Isermann , K. and Henjes , G. 1979 . Einfluss von cadmiumhaltigen Dungerphosphaten auf die Cadmiumanreicherung von Kulturböden und Nutzpflanzen . Lantwirtsch. Forschung , 32 : 262 – 274 .
- Kjellström , T. , Lind , B. , Linnman , L. and Elinder , C. G. 1975 . Variation of cadmium concentration in Swedish wheat and barley. An indicator of changes in daily cadmium intake during the 20th century . Arch. Environ. Health , 30 : 321 – 328 .
- Miljövårdsberedningen . 1989 . Jordbruket och miljön—en lägesrapport våren 1989 . Miljö- och Energidepartementet Ds 1989 , 49 : 99
- Mortvedt , J. J. 1987 . Cadmium levels in soils and plants from some long-term soil fertility experiments in the United States of America . J. Environ. Qual. , 16 : 137 – 142 .
- SAS Institute Inc. 1987 . SAS/STAT Guide for personal computers, Version 6 Edition , Cary, NC, , USA : SAS Institute Inc. .
- Schroeder , H. A. and Balassa , J. J. 1963 . Cadmium: Uptake by vegetables from superphosphate in soil . Science , 140 : 819 – 820 .
- Siman , G. 1985 . Effects on crop yields and soil properties of lime and fertilizers in the long-term liming experiments from 1962 to 1982 , Uppsala : Swedish University of Agricultural Sciences, Dept. of Soil Sciences, Div. of Soil Fertility . Report 165
- SLV . 1989 . Försurningens påverkan på kadmiumupptag i grödan—hälsorisker och behov av kalkning , Vol. 15 , 38 Uppsala : Statens livsmedelsverk . Rapport 1989
- Stenström , T. and Vahter , M. 1974 . Cadmium and lead in Swedish commercial fertilizers . Ambio , 3 : 91 – 92 .
- Williams , C. H. and David , D. J. 1973 . The effect of superphosphate on the cadmium content of soils and plants . Aust. J. Soil Res. , 11 : 43 – 56 .
- Williams , C. H. and David , D. J. 1976 . The accumulation in soil of cadmium residues from phosphate fertilizers and their effect on the cadmium content of plants . Soil Science , 121 ( No. 2 ) : 86 – 93 .
- Witter , E. 1989 . Agricultural use of sewage sludge: Controlling metal contamination of soils , Stockholm : National Environmental Protection Board . Report 3620